I’m looking for some clarification about the operation of the DIV antenna port on the WP7607 LTE module, as there seems to be conflicting information or viewpoints out there.
My application doesn’t require high data rates, but operation in marginal signal is important Why am I opting for LTE if I don’t need the bandwidth? Simply because 3G is in its twilight days and LTE will ultimately give me better coverage.
Traditionally Diversity means “Select whichever antenna has the strongest signal”, but in LTE it seems to be used for MIMO in order to give a higher bandwidth. I found this during Googling:
When signal strength or quality is low, it’s difficult for the modem to distinguish between the two data streams, so when signal levels drop below a certain threshold level, MIMO is switched off and the modem operates with only one antenna (Port 1 on Sierra Wireless modems).
I can see that DIV is receive only, yet the Tech Reference doesn’t say much about it but lists it as a mandatory connection. so
- Do I need it?
- If not, should I terminate the pin?
I’d like to not fit it if possible as I’m a bit short on space, plus it’ll be one less connector and antenna off my BOM.